Dangerously low staffing levels, a poorly-defined job description, insufficient training and a perceived lack of decision-making power have left prison officers feeling ignored, ineffective and unable to achieve their aims.

HMP Erlestoke in Wiltshire had failed to tackle a significant drugs problem – particularly with the synthetic cannabis Spice – which generated violence and bullying and "a sense of hopelessness"among prisoners, according to a report by HM Inspectorate of Prisons